Hoop-lug.



(Nu-Model.)

UNITED STATES PATENT OFFICE.

PETER C.- J URS, J R., OF SAN FRANCISCO, CALIFORNIA.

HOOP-LUG.

SPECIFICATION forming part of Letters Patent No. 708,233, dated September 2, 1902.

Application filed March 24, 1902. Serial No. 99,824. (No model).

To all whom, it may concern.-

Be it known that 1, PETER C. J URS, J r., a citizen of the United States, residing in the city and county of San Francisco,State of California, have invented an Improvement in Hoop-Lugs; and I hereby declare the following to be a full, clear, and exact description of the same.

My invention relates to improvements in devices for fastening together the ends of bands or hoops upon casks, tanks, and the like cylindrical structures. Its object is to provide a simply-constructed adjustable friction locking-lug that will not require any preliminary or subsequent bending or heading or riveting of the hoop ends.

It consists, essentially, of a chambered block carrying roller friction members which are adapted to clamp and hold a hoop-band when the latter is inserted into the chamber.

It comprises details which will be more fully set forth hereinafter, having reference to the accompanying drawings, in Which- Figure 1 is a portion of a tank embodying my invention, the blocks of the fastening being in section on the line at as, Fig. 3. Fig. 2 is an enlarged longitudinal section of the block, taken on the line y y, Fig. 3. Fig. 3 is a perspective View of the block.

A represents a section of a tank or vessel upon which are the hoop-bands 2. The ends of the hoops are fastened together by means of the lugs 3 and coupling-bolt 4. Each of these lugs consists of a block having a flat surface adapted to rest against the side of the tank. An opening 5 extends longitudinally through each block of a width substantially that of the band and with its upper and lower Walls converging in a direction opposite from the inner or adjacent ends of the two lugs when the latter are in position upon the tank. The block has a tapered portion or reinforcement 6, which is bored at 7 to receive the coupling-bolt 4. This bore 7 is inclined in relation to the bottom of the lug, so that when the two lugs are in position their bores will be in line. The outer ends 8 of the blocks are substantially perpendicular to the bores, so that the nuts 9 on the bolt may have asquare seat. Suitable roller frictional members 10 are contained in the opening 5 of each lug. The balls or rollers, as the case may be, are inserted through the opening 7 before the bolt is engaged and are adapted to clamp the face of the hoop-band against the bottom Wall of the opening 5. The ends of the latter are contracted, as shown, so that the balls may not fall out. The longitudinal ribs 11 serve to keep the balls separate after the hoop-baud has been inserted.

In operation each end of a hoop-band is passed through a lug with the deeper portion of the opening 5 adjacent to the end of the band. The halls arethen inserted, the coupling-bolt passed through the bores 7, and the nuts screwed up, whereupon the balls are drawninto tighter frictional engagement with the rearwardly and downwardly inclined upper wall of the opening and the surface of the band. The ends of the band are thus firmly gripped and drawn toward each other.

Having thus described my invention, what I claim, and desire to secure by'Letters Patent, is

In a hoop-lug, a block having a longitudinal slot for the reception of the hoop-band, said slot having its upper wall concaved and approaching the lower wall abruptly at' either end of the block, a longitudinal central opening for the bolt, partitions 11 on either side of the bolt, said partitions dependent from the upper wall of the baud-slot and balls having a limited reciprocal movement in the space formed between said partitions and the side walls of the slot, said ball-spaces extending substantially the entire length of the block.

In witness whereof I have hereunto set my hand.

PETER C. JURS, JR.

Witnesses: I

S. H. NoURsE, CHAS. E. TOWNSEND." 

